/* Caffeine - Modern Developer Tool Theme */

:root {
  --color-primary: #ff8ed4;        /* Pink - from logo character */
  --color-secondary: #5a9e9e;      /* Muted teal - cool complement */
  --color-background: #0a0a0a;     /* Deep black */
  --color-surface: #161212;        /* Very dark warm surface */
  --color-border: #2a2220;         /* Subtle warm border */
  --color-text: #e8e0d8;           /* Warm cream - readable */
  --color-text-muted: #9a918a;     /* Muted text */
  --color-text-bright: #ffffff;    /* Pure white */
  --color-accent: #5a9e9e;         /* Muted teal */
  --color-accent-hover: #6eb5b5;   /* Brighter teal hover */
  --color-mocha: #c9a16e;          /* Light mocha for accents */
  --color-espresso: #2d1810;       /* Espresso for depth */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Monaco', 'Courier New', monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-accent-hover);
}

/* Announcement Banner */
.announcement-banner {
  background-color: var(--color-secondary);
  color: var(--color-text-bright);
  text-align: center;
  padding: 0.75rem 1rem;
  font-weight: 500;
  font-size: 0.875rem;
}

.banner-link {
  color: var(--color-text-bright);
  text-decoration: none;
  display: inline-block;
  transition: color 0.2s ease;
}

.banner-link:hover {
  color: var(--color-primary);
}

.banner-text-mobile {
  display: none;
}

.banner-arrow {
  display: inline-block;
  transition: transform 0.2s ease;
}

.banner-link:hover .banner-arrow {
  transform: translateX(4px);
}

@media (max-width: 768px) {
  .banner-text-full {
    display: none;
  }
  .banner-text-mobile {
    display: inline;
  }
}

/* Header */
.site-header {
  background-color: var(--color-surface);
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--color-border);
}

.nav {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-bright);
  letter-spacing: -0.01em;
}

.logo-img {
  width: 36px;
  height: 36px;
  border-radius: 6px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
}

.nav-links a {
  color: var(--color-text-muted);
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.nav-links a:hover {
  color: var(--color-text-bright);
  background: rgba(255, 255, 255, 0.05);
}

/* Main Content */
.main-content {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 2rem;
  width: 100%;
}

/* Wider layout for tour */
.main-content:has(.tour-container) {
  max-width: 1800px;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 5rem 2rem 4rem;
  margin-bottom: 2rem;
}

.hero h1 {
  font-size: 3rem;
  color: var(--color-text-bright);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
  line-height: 1.1;
  font-weight: 700;
}

.tagline {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 550px;
  margin: 0 auto 2.5rem;
  line-height: 1.6;
}

.cta-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 0.75rem 1.5rem;
  border: 1px solid;
  border-radius: 8px;
  font-weight: 500;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.9rem;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-background);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: #ffb3e3;
  border-color: #ffb3e3;
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn-secondary:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text-bright);
}

/* Install Section */
.install-section {
  text-align: center;
  padding: 2.5rem;
  max-width: 600px;
  margin: 2rem auto;
  border-radius: 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.install-section h2 {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  line-height: 1.4;
  font-weight: 500;
}

.install-section p {
  color: var(--color-text);
  margin-bottom: 1rem;
}

.install-box {
  display: flex;
  align-items: stretch;
  width: 100%;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  overflow: hidden;
}

.install-box .code-block,
.install-box pre[class*="language-"] {
  text-align: left;
  max-height: none;
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  border-top-right-radius: 0 !important;
  border-bottom-right-radius: 0 !important;
  border-right: none !important;
  margin: 0 !important;
}

.install-box .code-block code {
  white-space: pre;
}

.install-box .copy-btn {
  background: var(--color-border);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
  padding: 0.5rem 0.75rem;
  border-radius: 0 8px 8px 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
  flex-shrink: 0;
}

.install-box .copy-btn:hover {
  background: var(--color-primary);
  color: var(--color-background);
}

.install-alt {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--color-mocha);
}

.install-alt a {
  color: var(--color-primary);
  text-decoration: underline;
}

.install-subtitle {
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.install-platform {
  margin-top: 1.25rem;
  font-size: 0.8rem;
  color: var(--color-mocha);
}

/* Tools Page */
.tools-page {
  max-width: 700px;
  margin: 0 auto;
}

.tools-hero {
  text-align: center;
  padding: 4rem 2rem 2rem;
}

.tools-hero h1 {
  font-size: 2.5rem;
  color: var(--color-text-bright);
  margin-bottom: 0.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.tools-section {
  margin-bottom: 2.5rem;
}

.tools-section h2 {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  font-weight: 500;
}

.tool-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 2rem;
}

.tool-card-header h3 {
  font-size: 1.15rem;
  color: var(--color-text-bright);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.tool-card-header p {
  color: var(--color-text);
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.tool-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.tool-badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
}

/* Code Examples */
.code-examples {
  padding: 2rem 0;
}

.code-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  max-width: 95%;
  margin: 0 auto;
  width: 100%;
}

.code-panel {
  display: flex;
  flex-direction: column;
  min-width: 0;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  overflow: hidden;
}

.panel-header {
  background-color: var(--color-surface);
  color: var(--color-text-muted);
  padding: 0.6rem 1rem;
  font-weight: 500;
  font-size: 0.75rem;
  text-align: center;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--color-border);
}

.tab-bar {
  display: flex;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) var(--color-surface);
  -webkit-overflow-scrolling: touch;
}

.tab-bar::-webkit-scrollbar {
  height: 6px;
}

.tab-bar::-webkit-scrollbar-track {
  background: var(--color-surface);
}

.tab-bar::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

.tab-bar::-webkit-scrollbar-thumb:hover {
  background: var(--color-mocha);
}

.tab {
  padding: 0.6rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  background: var(--color-background);
  border: none;
  border-right: 1px solid var(--color-border);
  color: var(--color-text-muted);
  cursor: pointer;
  white-space: nowrap;
  font-weight: 500;
  flex-shrink: 0;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.tab:hover {
  color: var(--color-primary);
  background-color: rgba(255, 142, 212, 0.1);
}

.tab.active {
  color: var(--color-background);
  background-color: var(--color-primary);
}

.tab-content {
  position: relative;
  height: 300px;
  background: var(--color-background);
}

/* Copy button - removed */

.tab-content .code-block {
  display: none;
  height: 100%;
  max-height: none;
}

.tab-content .code-block.active {
  display: block;
}

.code-header {
  background-color: var(--color-surface);
  color: var(--color-text-muted);
  padding: 0.6rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  border: 1px solid var(--color-border);
  border-bottom: none;
  border-radius: 8px 8px 0 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.code-block {
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.25rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem !important;
  line-height: 1.5;
  color: var(--color-text-bright);
  margin: 0;
  flex: 1;
  max-height: 300px;
  overflow-y: auto;
}

.code-block code {
  font-family: var(--font-mono);
  font-size: 0.85rem !important;
  white-space: pre;
  display: block;
}

/* Features */
.features {
  padding: 4rem 0;
}

.features h2 {
  text-align: center;
  font-size: 1.5rem;
  color: var(--color-text-bright);
  margin-bottom: 2.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature {
  background-color: var(--color-surface);
  padding: 1.75rem;
  border: 1px solid var(--color-border);
  border-radius: 10px;
}

.feature h3 {
  color: var(--color-text-bright);
  margin-bottom: 0.75rem;
  font-size: 1rem;
  font-weight: 600;
}

/* Blog */
.blog-container {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3rem;
  align-items: start;
}

.blog-main {
  min-width: 0;
}

.blog-main h1 {
  font-size: 1.75rem;
  color: var(--color-text-bright);
  margin-bottom: 2rem;
  font-weight: 600;
}

.blog-sidebar {
  position: sticky;
  top: 2rem;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
  padding: 1.5rem;
}

.filter-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.blog-sidebar h3 {
  color: var(--color-text-muted);
  margin: 0;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sort-controls {
  display: flex;
  gap: 0.5rem;
}

.sort-btn {
  background-color: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.sort-btn:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text);
}

.sort-btn.active {
  background-color: var(--color-primary);
  color: var(--color-background);
  border-color: var(--color-primary);
}

.tag-filters {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.filter-tag {
  background-color: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: 0.6rem 0.9rem;
  cursor: pointer;
  text-align: left;
  font-size: 0.8rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.filter-tag:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-tag.active {
  background-color: var(--color-primary);
  color: var(--color-background);
  border-color: var(--color-primary);
}

.tag-count {
  color: var(--color-text);
  font-size: 0.75rem;
}

.filter-tag.active .tag-count {
  color: var(--color-background);
}

.blog-list h1,
.about h1 {
  font-size: 1.75rem;
  color: var(--color-text-bright);
  margin-bottom: 2rem;
  font-weight: 600;
}

.posts {
  list-style: none;
}

.post-item {
  background-color: var(--color-surface);
  padding: 1.5rem;
  margin-bottom: 1rem;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  transition: border-color 0.2s ease;
}

.post-item:hover {
  border-color: var(--color-primary);
}

.post-item h2 {
  color: var(--color-text-bright);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.post-date {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.post-summary {
  color: var(--color-text);
}

/* Blog Post */
.blog-post {
  max-width: 800px;
}

.post-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.post-header h1 {
  font-size: 2rem;
  color: var(--color-text-bright);
  margin-bottom: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.post-content {
  color: var(--color-text);
}

.post-content p {
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.post-content h2 {
  color: var(--color-text-bright);
  margin: 2.5rem 0 1rem;
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.post-content h3 {
  color: var(--color-text-bright);
  margin: 2rem 0 0.75rem;
  font-size: 1.15rem;
  font-weight: 600;
}

.post-content img {
  max-width: 700px;
  width: 90%;
  height: auto;
  margin: 2rem auto;
  display: block;
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.post-content p.wide img {
  max-width: 100%;
  width: 100%;
}

/* Image captions */
.post-content figure {
  max-width: 700px;
  width: 90%;
  margin: 2rem auto;
  text-align: center;
}

.post-content figure img {
  margin: 0 auto 0.5rem;
}

.post-content figcaption {
  font-size: 0.85rem;
  color: var(--color-text);
  font-style: italic;
  margin-top: 0.5rem;
  text-align: center;
}

.post-content p.figure {
  text-align: center;
  max-width: 700px;
  width: 90%;
  margin: 2rem auto 0.5rem;
}

.post-content p.figure img {
  margin: 0 auto;
}

.post-content p.figure + p {
  font-size: 0.85rem;
  color: var(--color-text);
  font-style: italic;
  text-align: center;
  margin-top: 0.5rem;
  margin-bottom: 2rem;
  max-width: 700px;
  width: 90%;
  margin-left: auto;
  margin-right: auto;
}

/* Table of Contents */
.post-content .toc {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.5rem;
  margin: 2rem 0;
}

.post-content .toc-title {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin: 0 0 1rem 0;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.post-content .toc ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.post-content .toc li {
  margin: 0.75rem 0;
}

.post-content .toc a {
  color: var(--color-text);
  text-decoration: none;
  border-bottom: none;
}

.post-content .toc a:hover {
  color: var(--color-primary);
}

.post-content .toc ul ul {
  padding-left: 2rem;
  margin-top: 0.5rem;
  border-left: 1px solid var(--color-border);
}

.post-content .toc li li {
  font-size: 0.9rem;
  margin: 0.5rem 0;
}

/* Header anchor links */
.post-content h2,
.post-content h3,
.post-content h4 {
  position: relative;
}

.post-content h2:hover,
.post-content h3:hover,
.post-content h4:hover {
  color: var(--color-primary);
}

.post-content .header-anchor {
  position: absolute;
  left: -1.5rem;
  padding-right: 0.5rem;
  color: var(--color-primary);
  text-decoration: none;
  opacity: 0;
  font-weight: normal;
  cursor: pointer;
  border: none;
}

.post-content h2:hover .header-anchor,
.post-content h3:hover .header-anchor,
.post-content h4:hover .header-anchor {
  opacity: 1;
}

/* Blog post code blocks */
.post-content pre {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.post-content pre code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--color-text-bright);
}

.post-content code {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  background-color: rgba(255, 142, 212, 0.15);
  padding: 0.15rem 0.35rem;
  border-radius: 3px;
  color: var(--color-primary);
}

.post-content pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  color: var(--color-text-bright);
}

.post-content a code {
  color: var(--color-secondary);
  background-color: rgba(90, 158, 158, 0.15);
}

/* Blockquotes */
.post-content blockquote {
  margin: 2rem 0;
  font-style: italic;
  color: var(--color-text);
  background-color: var(--color-surface);
  padding: 1.5rem 2rem;
  border-left: 3px solid var(--color-accent);
  border-radius: 0 8px 8px 0;
}

/* Style Guide */
.style h1 {
  font-size: 2rem;
  color: var(--color-text-bright);
  margin-bottom: 2rem;
  line-height: 1.3;
  font-weight: 700;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 1rem;
}

.style h2 {
  color: var(--color-text-bright);
  margin: 2.5rem 0 1.5rem;
  font-size: 1.2rem;
  font-weight: 600;
  border-left: 3px solid var(--color-accent);
  padding-left: 1rem;
}

.style ul {
  list-style: none;
  margin-left: 2rem;
  margin-bottom: 1.5rem;
}

.style li {
  margin-bottom: 1rem;
  color: var(--color-text);
  position: relative;
  padding-left: 1.5rem;
}

.style li:before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: bold;
}

/* About */
.about-section {
  margin-bottom: 2rem;
  padding: 2rem;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
}

.about-section h2 {
  color: var(--color-text-bright);
  margin-bottom: 1rem;
  font-weight: 600;
}

/* Footer */
.site-footer {
  background-color: var(--color-surface);
  padding: 2rem;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.footer-content p {
  margin-bottom: 0.75rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Post Tags */
.post-tags {
  margin-top: 1rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.tag {
  background: transparent;
  color: var(--color-text-muted);
  padding: 0.35rem 0.7rem;
  font-size: 0.7rem;
  border: 1px solid var(--color-border);
  font-family: var(--font-mono);
  border-radius: 4px;
  transition: all 0.2s ease;
}

.tag:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Post filtering */
.post-item.hidden {
  display: none;
}



/* Shared editor/output styles */
.version-badge {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background-color: var(--color-secondary);
  color: var(--color-text-bright);
  padding: 0.25rem 0.5rem;
  border-radius: 3px;
}


.editor-panel,
.output-panel {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  overflow: hidden;
  flex: 1;
}

.editor-header,
.output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--color-surface);
  color: var(--color-text-muted);
  padding: 0.5rem 1rem;
  font-weight: 500;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
  gap: 0.75rem;
}

.editor-label {
  font-size: 0.7rem;
  letter-spacing: 0.05em;
}

.editor-filename {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: normal;
  color: var(--color-text-muted);
  text-transform: none;
}

.editor {
  flex: 1;
  min-height: 350px;
  display: flex;
  overflow: hidden;
}

.editor .cm-editor {
  width: 100%;
  height: 100%;
}

.editor .cm-scroller {
  overflow: auto;
}

.auto-compile-badge {
  font-size: 0.75rem;
  font-weight: normal;
  color: #888;
  font-style: italic;
  text-transform: none;
}


.output-panel {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: hidden;
}

.output-content {
  flex: 1;
  overflow: auto;
  background-color: #2d2d2d;
  min-height: 0;
}

.output-code {
  margin: 0;
  padding: 1rem;
  background-color: #2d2d2d;
  border: none;
  font-family: var(--font-mono);
  font-size: 12px !important;
  line-height: 1.4;
  color: var(--color-text-bright);
  white-space: pre;
  overflow: auto;
}

.output-code code {
  font-family: var(--font-mono);
  font-size: 12px !important;
  background: none;
  padding: 0;
  color: inherit;
}

.error-output {
  color: var(--color-secondary) !important;
  white-space: pre-wrap !important;
  word-break: break-word;
}

/* Responsive */
@media (max-width: 968px) {
  .output-code {
    min-height: 250px;
  }

  .blog-container {
    grid-template-columns: 1fr;
  }

  .blog-sidebar {
    order: -1;
    position: static;
    margin-bottom: 2rem;
  }
}

@media (max-width: 768px) {
  body {
    font-size: 14px;
  }

  .nav {
    flex-direction: column;
    gap: 1rem;
  }

  .nav-links {
    gap: 0.5rem;
    font-size: 0.8rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .cta-buttons {
    flex-direction: column;
  }

  .code-grid {
    grid-template-columns: 1fr;
  }

  .logo {
    font-size: 1.1rem;
  }
}

@media (max-width: 480px) {
  .filter-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .sort-controls {
    width: 100%;
    justify-content: flex-end;
  }
}

/* Subscribe Form in Footer */
.subscribe-section {
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.subscribe-title {
  color: var(--color-text-bright);
  margin-bottom: 1rem;
  font-size: 1rem;
  font-weight: 600;
}

.subscribe-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: center;
}

.subscribe-input {
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-background);
  color: var(--color-text-bright);
  font-family: var(--font-body);
  font-size: 0.9rem;
  min-width: 220px;
  transition: border-color 0.2s ease;
}

.subscribe-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.subscribe-input::placeholder {
  color: var(--color-text-muted);
}

.subscribe-button {
  padding: 0.75rem 1.5rem;
  background: var(--color-primary);
  color: var(--color-background);
  border: 1px solid var(--color-primary);
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.subscribe-button:hover {
  background: #ffb3e3;
  border-color: #ffb3e3;
  transform: translateY(-1px);
}

.subscribe-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.subscribe-message {
  width: 100%;
  text-align: center;
  font-size: 0.85rem;
  margin-top: 0.75rem;
  min-height: 1.2em;
}

.subscribe-message.success {
  color: #4ade80;
}

.subscribe-message.error {
  color: var(--color-secondary);
}

/* Turnstile widget styling - hide it visually but keep it functional */
.subscribe-form {
  position: relative;
}

.cf-turnstile {
  position: absolute;
  left: -9999px;
  width: 130px;
  height: 65px;
  overflow: hidden;
  opacity: 0.01;
  /* Keep pointer events so it can still function */
}

/* Widget container - hidden off-screen */
#turnstile-widget {
  position: absolute;
  left: -9999px;
  width: 130px;
  height: 65px;
  overflow: hidden;
  opacity: 0.01;
}

/* Subtle attribution for Turnstile */
.turnstile-attribution {
  font-size: 0.65rem;
  color: var(--color-border);
  margin-top: 0.25rem;
  text-align: center;
  font-family: var(--font-mono);
}

.turnstile-attribution a {
  color: var(--color-border);
  text-decoration: none;
  border-bottom: 1px dotted var(--color-border);
}

.turnstile-attribution a:hover {
  color: var(--color-text);
  border-bottom-color: var(--color-text);
}

@media (max-width: 600px) {
  .subscribe-form {
    flex-direction: column;
  }

  .subscribe-input {
    width: 100%;
  }

  .subscribe-button {
    width: 100%;
  }
}

/* ─── Tour of Caffeine ─────────────────────────────────────────────────────── */

.tour-container {
  max-width: 100%;
}

.tour-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.tour-title-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.tour-header h1 {
  font-size: 1.5rem;
  color: var(--color-text-bright);
  margin-bottom: 0;
  font-weight: 600;
  line-height: 1.3;
}

.tour-progress {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.tour-progress-bar {
  width: 120px;
  height: 6px;
  background: var(--color-surface);
  border-radius: 3px;
  overflow: hidden;
}

.tour-progress-fill {
  height: 100%;
  background: var(--color-primary);
  transition: width 0.3s ease;
}

.tour-progress-text {
  font-size: 0.8rem;
  color: var(--color-mocha);
  font-family: var(--font-mono);
}

/* Main body: 2-column layout (left: content+editors, right: output) */
.tour-body {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 1rem;
  height: calc(100vh - 140px);
  min-height: 500px;
}

.tour-left {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 0;
}

/* Lesson panel */
.tour-lesson {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
  flex: 1;
  min-height: 0;
  position: relative;
  overflow: hidden;
}

/* Fade overlay at bottom — signals more content below */
.tour-lesson::after {
  content: '';
  position: absolute;
  bottom: 48px; /* sits above the nav bar */
  left: 0;
  right: 0;
  height: 48px;
  background: linear-gradient(to bottom, transparent, var(--color-surface));
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.tour-lesson.scrolled-end::after {
  opacity: 0;
}

.tour-lesson-content {
  padding: 1.5rem;
  padding-bottom: 2.5rem; /* extra space so fade doesn't cover last line */
  overflow-y: scroll;
  flex: 1;
  min-height: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) var(--color-espresso);
}

.tour-lesson-content::-webkit-scrollbar {
  width: 8px;
}

.tour-lesson-content::-webkit-scrollbar-track {
  background: var(--color-espresso);
}

.tour-lesson-content::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

.tour-lesson-content::-webkit-scrollbar-thumb:hover {
  background: var(--color-mocha);
}

.tour-lesson-content h2 {
  color: var(--color-text-bright);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.lesson-body p {
  margin-bottom: 0.75rem;
  line-height: 1.7;
}

.lesson-body code {
  background: #2d2d2d;
  padding: 0.15rem 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-mocha);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.lesson-code {
  background: #2d2d2d;
  padding: 0.75rem 1rem;
  margin: 0.75rem 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.5;
  color: #ccc;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  overflow-x: auto;
}

.lesson-list {
  margin: 0.75rem 0;
  padding-left: 1.5rem;
}

.lesson-list li {
  margin-bottom: 0.4rem;
  line-height: 1.6;
}

.lesson-hint {
  margin-top: 1rem;
  padding: 0.6rem 0.75rem;
  background: var(--color-espresso);
  border-left: 2px solid var(--color-mocha);
  border-radius: 0 6px 6px 0;
  font-size: 0.85rem;
  color: var(--color-mocha);
}

/* Markdown-generated elements in lessons */
.lesson-body pre {
  background: #2d2d2d;
  padding: 0.75rem 1rem;
  margin: 0.75rem 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.5;
  color: #ccc;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  overflow-x: auto;
}

.lesson-body pre code {
  background: none;
  padding: 0;
  border: none;
  font-size: inherit;
  color: inherit;
}

.lesson-body ul,
.lesson-body ol {
  margin: 0.75rem 0;
  padding-left: 1.5rem;
}

.lesson-body li {
  margin-bottom: 0.4rem;
  line-height: 1.6;
}

.lesson-body blockquote {
  margin-top: 1rem;
  padding: 0.6rem 0.75rem;
  background: var(--color-espresso);
  border-left: 2px solid var(--color-mocha);
  border-radius: 0 6px 6px 0;
  font-size: 0.85rem;
  color: var(--color-mocha);
}

.lesson-body blockquote p {
  margin: 0;
}

.lesson-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.85rem;
}

.lesson-body th,
.lesson-body td {
  border: 1px solid var(--color-border);
  padding: 0.5rem 0.75rem;
  text-align: left;
}

.lesson-body th {
  background: var(--color-espresso);
  color: var(--color-text-bright);
  font-weight: 600;
}

.lesson-body tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

/* Navigation buttons */
.tour-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--color-border);
  background: var(--color-espresso);
}

.tour-btn {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 0.4rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tour-btn:hover:not(:disabled) {
  background: var(--color-primary);
  color: var(--color-background);
  border-color: var(--color-primary);
}

.tour-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.tour-btn-toc {
  font-size: 0.7rem;
  color: var(--color-mocha);
}

/* Editors row (two columns, fills remaining left space) */
.tour-editors {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  flex: 1;
  min-height: 200px;
}

.tour-editor-panel {
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.tour-editor-panel::after,
.tour-output-panel::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40px;
  background: linear-gradient(to bottom, transparent, #282c34);
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.tour-editor-panel.scrolled-end::after,
.tour-output-panel.scrolled-end::after {
  opacity: 0;
}

.tour-editor-panel .editor {
  flex: 1;
  min-height: 0;
}

.tour-output-panel {
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.tour-output-panel .output-content {
  flex: 1;
  overflow: auto;
}

/* Disabled editors state */
.tour-editors.editors-disabled,
.tour-output-panel.editors-disabled {
  opacity: 0.4;
  pointer-events: none;
}

.tour-editors.editors-disabled .cm-editor {
  background: var(--editor-bg);
}

.tour-editors.editors-disabled .cm-content {
  color: var(--text-muted);
}

/* Table of contents overlay */
.tour-toc-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.tour-toc-overlay.hidden {
  display: none;
}

.tour-toc {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 1.5rem;
  min-width: 320px;
  max-width: 90vw;
}

.tour-toc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.tour-toc-header h3 {
  color: var(--color-text-bright);
  font-size: 1rem;
  font-weight: 600;
}

.tour-toc-close {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text);
  font-size: 1rem;
  width: 28px;
  height: 28px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.tour-toc-close:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.tour-toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.tour-toc-list li {
  margin-bottom: 0.25rem;
}

.tour-toc-item {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  transition: all 0.1s ease;
}

.tour-toc-item:hover {
  background: var(--color-espresso);
  color: var(--color-primary);
}

.tour-toc-item.active {
  color: var(--color-primary);
  border-left: 2px solid var(--color-primary);
  background: var(--color-espresso);
  border-radius: 0 6px 6px 0;
}

/* Tour responsive */
@media (max-width: 968px) {
  .tour-body {
    grid-template-columns: 1fr;
    height: auto;
  }

  .tour-lesson {
    max-height: 50svh;
  }

  .tour-editors {
    grid-template-columns: 1fr;
  }

  .tour-editor-panel {
    height: 280px;
  }

  .tour-output-panel {
    height: 300px;
  }

  .tour-header {
    flex-direction: column;
    align-items: flex-start;
  }
}